Radiative recombination data for tungsten ions: II. W47+–W71

• Published in: Atomic data and nuclear data tables Vol. 100; no. 4; pp. 986 - 1058
• Main Authors: Trzhaskovskaya, M.B., Nikulin, V.K.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-07-2014
• ISSN: 0092-640X; 1090-2090
• DOI: 10.1016/j.adt.2013.11.004

New radiative recombination and photoionization cross sections, radiative recombination rate coefficients, and radiated power loss rate coefficients are presented for 23 tungsten impurity ions in plasmas. We consider ions from W47+ to W71+ that are of importance to fusion studies for ITER and for experiments using electron beam ion traps. The calculations are fully relativistic and all significant multipoles of the radiative field are taken into account. The Dirac–Fock method is used to compute the electron wavefunctions. Radiative recombination rates and radiated power loss rates are found using the relativistic Maxwell–Jüttner distribution of the continuum electron velocity. The total radiative recombination cross sections are given in the electron energy range from 1 eV to ∼80keV. Partial cross sections for ground and excited states are approximated by an analytical expression involving five fit parameters. Radiative recombination rates and radiated power loss rates are calculated in the temperature range from 104K to 109K. The total radiative recombination rates are approximated by another analytical expression with four fit parameters.